How to create a sequence of integers in C#?

Question

F# has sequences that allows to create sequences:

seq { 0 .. 10 }

Create sequence of numbers from 0 to 10.

Is there someth

Answer 1

Originally answered here.

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If you want to enumerate a sequence of numbers (IEnumerable) from 0 to a variable end, then try

Enumerable.Range(0, ++10);

In explanation, to get a sequence of numbers from 0 to 10, you want the sequence to start at 0 (remembering that there are 11 numbers between 0 and 10, inclusive).

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If you want an unlimited linear series, you could write a function like

IEnumerable Series(int k = 0, int n = 1, int c = 1)
{
    while (true)
    {
        yield return k;
        k = (c * k) + n;
    }
}

which you could use like

var ZeroTo1000 = Series().Take(11);

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If you want a function you can call repeatedly to generate incrementing numbers, perhaps you want somthing like.

using System.Threading;

private static int orderNumber = 0;

int Seq()
{
    return Interlocked.Increment(ref orderNumber);
}

When you call Seq() it will return the next order number and increment the counter.